baber/WOPTO huggingface dataset:
Patent GB-1390445-A (GB)
Title: Implantable material and appliance method of preparing same and method of stabilizing implants
Inventor: HOMSY CHARLES ALBERT
IPC: A61L27/44
Filed: 1972-05-18
Abstract: 1390445 Surgical implants VITEK Inc 18 May 1972 [20 May 1971] 23427/72 Heading A5R [Also in Divisions C1 and C3] A composite article suitable for in vivo implantation e.g. an artificial tooth or denture, a prosthetic joint, tendon or soft tissue, comprises biocompatible fibres bonded with a biocompatible polymer, the article having a porous fibrous structure, and the biocompatible fibres comprise a substantial portion of the internal and external surface of said article so that the critical surface tension over at least these portions of the surface is from 35 to 80 dynes/cm. The porosity is due to both spheroidal and dendritic spaces. The preferred fibres include carbon, including graphite fibres. The biocompatible polymer may be a perfluorinated polymer, polyethylene or a polyester. It may for example be PTFE at least part of which is in a fibrous form. The voids of article may constitute at least 60% of the total volume. The article may also incorporate a wear material bonded to a surface of the structrue. Said wear material comprising carbon fibres and PTFE sintered with the fibres so as to bind them together. The composite article may also contain a bonding resin attached to one surface of the body and adapted to bond the structure to other resins and to metal. The porous body of the invention may be made from a composition comprising biocompatible fibres, biocompatible polymer and a leachable substance such that when the composition is subjected to leaching, said substance is removed from the composition and the required porous structure is obtained. It is preferred that the leachable substance is water soluble for example sodium chloride of a particle size of 10 to 600 microns. A bonding material may be attached to the surface of the composition containing the leachable substance provided the leachable substance has been removed from that surface. The bonding material is preferably a fluorinated ethylene propylene polymer. An appliance for implantation may comprise such an article or composition bonded to a metal prosthesis preferably it is bonded to that part of the. prosthesis by means of which the prosthesis is implanted in and attached to the healthy bone or tissue of the patient. A tendon may comprise a high strength fabric e.g. of glass fibre or fluorinated ethylene propylene polymer with a porous article as defined above attached to each end. The composition containing the leached material may be prepared by forming a slurry comprising carbon fibres, PTFE fibres and a leachable substance in an isoparafinnic organic solvent in which the leachable material is insoluble, filtering to form a filter cake, compressing to further reduce the solvent content, rolling, oven heating and sintering at 610‹F to 680‹F for at least three minutes. A plurality of oven heated filter cakes may be stacked together before sintering to produce a material of desired thickness.
Patent GB-331412-A (GB)
Title: Improvements in model flying machines
IPC: A63H27/00
Filed: 1929-07-31
Abstract: 331,412. Lobb, J. B., and Lobb, H. B. July 31, 1929. Toy and model aircraft.-A model aeroplane having a longitudinal frame member c is supported by a wheel frame a which frame has its upper end bent in the manner shown in Fig. 3 to fit into a recess provided in a socket or bracket fitting b on or secured to the member c. The end a<2> of the bent portion of frame a forms a hinge pin which co-operates with a stop b<2> when the frame a is swung up against the member b when the machine is not in use. A spring tongue b<3> serves normally to stay the wheel frame a in position. An upwardly extending portion b<5> of the socket b forms a bearing for a propeller shaft f<1> and an anchor for driving spring f. A rudder r which may be of celluloid is held vertically on the bar c by a wire clip r<2> and may be set at any angle, being retained by the friction of a horizontally bent portion r' which is a tight fit in the member c. A similar mounting may be employed for the elevator e. According to the Provisional Specification the tail plane may be hinged at its leading edge to the member c and the inclination adjusted by a screw-and-nut device, and the rudder may be secured by two wire clips passing through the member c.
Patent GB-320453-A (GB)
Title: Improvements in, or relating to, gas burners
IPC: F23D14/04
Filed: 1928-08-15
Abstract: 320,453. King, F., and King & Co. (Bath), Ltd., F. Aug. 15, 1928. Perforated-tube burners.-A gas burner, particularly for use in fish frying ranges and ovens, comprises a plurality of straight, curved or zigzagged perforated burner tubes 1 arranged transversely to, and communicating at each end with, a circumjacent circular, square, polygonal or other conduit 3 having a single connection to the fuel supply. In the form shown, the gas supply pipe 6 projects into the open flared end of a mixing- tube 4. A pilot jet 8 controlled by a valve 10 is provided with a universal joint 9. The inlet tube 4 may be arranged so that the fuel passes in one direction only through the conduit 3.
Patent GB-226601-A (GB)
Title: Apparatus for pushing coal tubs
IPC: B66B17/20
Filed: 1923-09-22
Abstract: 226,601. Rose, A. E. Sept. 22, 1923. Vehicles, handling.-In means for pushing corves into or out of mine cages of the kind in which the pivoted pushing arm 6 during the return to initial position is lowered by contact with a fixed stop 13, the arm 6 is attached to a spring- controlled rod 7 which tends to maintain it in the vertical position. and the bogie 4 carrying the arm is held in its initial position by a gravity catch 14 which is raised by an arm 15 connected to the valve 9 of the cylinder 1 when the valve is turned to admit fluid so that the bogie is pushed towards the cage. The valve is actuated by a lever 10 which can only be moved when the gate of the cage is raised fully, and which is reversed automatically by contact with the bogie when the latter is near the cage gate. In a modification, the arm is rigidly connected to the bogie 20, Fig. 6, and the track 22 is curved so that the arm is inclined as shown.
Patent GB-934451-A (GB)
Title: Improvements in or relating to film dryers
Inventor: SIMON WILLIAM GEORGE
IPC: F26B17/28
Filed: 1960-07-07
Abstract: 934,451. Film driers. RICHARD SIMON & SONS Ltd. July 6, 1961 [July 7, 1960], No. 23747/60. Class 34 (1). A heated hollow rotary drum comprises one or more feed rolls supplying a film of paste thereto, agitator blades positioned in the paste adjacent the or each feed roll and a doctor blade removing the dried paste. A steam heated hollow rotary drum having feed rolls 2 and a feed box arrangement comprising a roll 3 and member 4 has a frame 5 arranged to reciprocate in the direction of the length of the rolls which carry agitator blades 6 which extend into the material between the rolls. The dried film is removed from the cylinder by a doctor blade 7. In a modification two such drums are mounted to give a nip therebetween one of the cylinders having adjustment means to vary the nip. The agitator blades are arranged on a frame which is reciprocal by pneumatic cylinders in the direction of length of the feed rolls, and have additional blades extending into the vicinity of the nip.
Patent GB-652815-A (GB)
Title: Improvements in or relating to boilers for absorption coolers
IPC: F25B33/00
Filed: 1948-09-09
Abstract: 652,815. Refrigerating. TEILMAN, P. Sept. 9, 1948, No. 23765. Convention date, Sept. 12, 1947. [Class 29] A boiler for absorption refrigerating machines of the continuous cycle inert gas type comprises an annular container 1, 2 in which is defined two helical paths 6, 8 for the weak and strong liquor respectively, the path 8 serving as a gas bubble pump discharging on to a domeshaped cover 4 and a heating element 12 being located in proximity to the surface of the liquid in the boiler. It is stated that a smaller supply of heat than is usual is required since the boiling takes place near the surface of the liquid, liquor from the path 8 falls on to the hot cover 4 and the descending weak liquor heats the ascending strong liquor. The helical paths are shown defined by a pipe 7 for the strong liquor. The element 12 is vertically adjustable by a knob 16 or by a bimetallic element: Insulation 17 is provided. The Specification as open to inspection under Sect. 91 states that the paths 6, 8 may be defined by helical plates, and each path may be constituted by several paths connected in parallel. This subject-matter does not appear in the Specification as accepted.
Patent GB-881551-A (GB)
Title: Improvements in or relating to imitation candles
IPC: B44F11/00
Filed: 1959-07-10
Abstract: 881,551. Imitation candles. ASHER, H. May 23, 1960 [July 10, 1959], No. 23860/59. Class 75(4) An imitation candle comprises a hollow container 1 for fuel having "tears" to simulate melted wax on the sides of the exterior around the top, a sleeve 5 fitting into an opening in the top 2 and a wick 7 passing through and projecting from the top of the sleeve, the container 1 being frusto-conical in shape and having its mass concentrated around its base. The container may be of metal or plastic, a heavy weight being incorporated in the base in the latter case. The top 2 is funnel shaped to facilitate filling the container and may have an air vent 8.
Patent GB-1082646-A (GB)
Title: Improvements in or relating to equipment for use with aircraft
Inventor: MOLINS JACK JOSEPH
IPC: B64D7/08
Filed: 1963-06-14
Abstract: 1,082,646. Dropping from aircraft. AIR-LOG Ltd., and J. J. MOLINS. June 15, 1964 [June 14, 1963], No. 23903/63. Heading F3C. Means for use in dropping stores from aircraft comprises a rearwardly facing ejector having operating means whereby the velocity of projection of a control pellet is varied automatically in accordance with the aircraft air velocity. The control pellet, which radiates radio, heat or light signals, guides by powered or gliding flight the previously released " store " having appropriate receiving means to the target area. In one embodiment, Fig. 2, the air pressure in chamber 21, which is fed from a storage bottle 22, is controlled by an adjustable relief valve 24, the setting of which is adjusted by an electric actuator 25 operated by a signal received from an air speed indicator computer. The pellet 16 is held by plungers 28 which are spring-loaded outwardly and forced inwards by cams 30 rotatable by solenoids 32. When the latter are energized to rotate the cams so that the plungers 28 are retracted by springs 29 the pressure in chamber 21 ejects the pellet 16 with a velocity equal to that of the aircraft. In another embodiment, Fig. 3, the pellet is ejected by a cartridge 49 provided with electrical or percussion type discharger 51 and the velocity of ejection is varied by varying the effective length of the barrel. The latter is formed with a series of gas vents 41 which are covered more or less by a sleeve 42 that is slidable on the barrel under the influence of hydraulic pressure emitted into the cylinder 44 by a valve 47 which is moved by an actuator 48 under the control of the signal from the computer. In a modification the sleeve is externally threaded and is in engagement with an internally threaded fixed housing, the sleeve also carrying a gear which meshes with a pinion which is driven from the computer. In a further modification the sleeve is carried by a spring bellows to the interior of which pressure fluid is fed, the pressure of which is determined by the computer.
Patent GB-705031-A (GB)
Title: Machine for thread rolling
IPC: B21H3/06
Filed: 1951-10-15
Abstract: 705,031. Rolling screw-threads. PRUTTON, D. H. Oct. 15, 1951, No. 24005/51. Class 83 (4). [Also in Group XXX] A machine for rolling threads on screw blanks has means for feeding the blanks down channels 78 located on opposite sides of the machine to escapement means formed by feed fingers 145 operated by a cam 40 adjustably mounted at 161 on a central driven shaft 23 that also rotates a head carrying an annular roll 26 having four sets of thread rolling surfaces 26a that coact with fixed concave dies 46. The feed fingers are set to thread a blank between the rolling surfaces at the moment when their leading corners are just about to pass. The dies 46 have dovetail ends for clamping in holders 48 by pads 49, 81, and the holders are supported and adjustably positioned by abutments 57 with adjustable backing-up screws 59. The feed fingers are mounted on slide bars 144, Fig. 15, in channels having spring pressed gibs 142 for bottoms, and are provided with adjustable back stops 150. The feed fingers carry hold-downs 155a adjustably pivoted at 156 and provided with back-stops 157 and control springs 159. As the feed fingers move forward to irtroduce the blanks between the dies the hold-downs move away from their back stops and the springs lower them onto the heads of the blanks ensuring that they are properly positioned with respect to the thread rolling dies. The slide bars 144 have a join and slot connection at 148 with levers 130 pivoted at 127 and connected to levers 129 by springs 133, providing for yield should a blank jam. The levers 129 have second arms 128 carrying rollers that are maintained in contact with the cam 40 by springs 135. Blanks, transferring.-Blanks are supplied at 77, Fig. 3, by rotating hoppers 65, driven by separate motors 74, Fig. 1, through belt gearing 69 and reduction gearing 70, and adjustably mounted at 68 on brackets 66. Baffles 79 on the hoppers carry the blanks upwards and permit them to fall on the flaring sides 108 of spaced guide rails 80 between which the blanks slide, hanging by their heads. Wheels 109, with teeth shaped to suit the heads, are driven by belts 121 from the control shaft 23 and removes any blanks improperly positioned. The wheels are mounted on pivoted arms 113 maintained with stops 117 in contact with adjustable screws 118 by the belt tension. The spacing of the rails is controlled and maintained by adjustably nested angle brackets 82, 86 and other brackets 100, mounted on one of the rails, adjustably supported short guard strips 101 that prevent the heads from riding one upon another. The strips have fingers entering central grooves in the wheels 109. Further guard strips 104 are supported from the other rails by a hinged connection, manipulating handles 105 being provided. The rails and their adjuncts are supported from the table 21 by brackets 88, having guideways in which slide supports having arms 89a secured to the rails. Screws 93 adjust the height of the rails to suit the threading roll 26 and clamping.is effected at 92.
Patent GB-426595-A (GB)
Title: Improvements in and relating to tobacco forwarding and compressing mechanism for continuous rod cigarette making machines
IPC: A24C5/18
Filed: 1934-08-20
Abstract: 426,595. Cigarette-making machines. AMERICAN MACHINE & FOUNDRY CO., 511, 5th Avenue, New York, U.S.A. Aug. 20, 1934, No. 24014. Convention date, May 22. [Class 130] In a continuous-rod cigarette-making machine, tobacco is forwarded to the rod former tongue 32 between a pair of travelling belts 15, passing through a guiding trough 16 provided with a cover block 17, and is compressed first by a narrow tongue 18 having an inclined compressing surface 19 and then by a rotatable wheel 25, the cigarette paper P and rod forming tape T being fed under the tobacco stream between the bottom plate 23 of the trough 16 and the rod former plate 24. The trough 16 is so shaped that the belts are in contact at their lower edges to form a V-shaped channel at the feed end thereof but are gradually separated to become vertical and parallel to one another at the mouth of the former tongue 32 where the compression wheel 25 is located. This wheel 25, which may be driven by frictional contact with the belts 15, is provided with a circumferential slot 30 to receive as shown the end 31 of the compression tongue 18 which serves also to strip the stream of tobacco from said wheel. The compression tongue 18 is mounted within the trough 16 by a bar 20 and thumbscrews 21.
Patent GB-332079-A (GB)
Title: Improvements in drawing mechanism for preparing fibrous material for spinning
IPC: D01H5/22
Filed: 1929-08-06
Abstract: 332,079. Reynolds, W. G. Aug. 6, 1929 Drawing-frames.-A sliver of cotton or like fibre 5 is drawn in an apparatus comprising a series of pairs of rollers 7 - - 22, Fig. 1, the pairs 9, 10; 13, 14; 17, 18; 21, 22 being drawing rollers and the intermediate pairs 11, 12; 15, 16; 19, 20 consisting of a grooved lower roller and a yielding presser roller occupying the groove whereby the strand is folded upon itself and condensed or compacted as shown in Fig. 4. The groove 25 in the lower roller 12 is formed with bevelled edges, the upper roller 11 being driven from the lower roller by spur gearing. The first pair of rollers 7, 8 serve as delivery rollers but a pair such as 11, 12 may be substituted therefor. A thread of rayon or other undrawn fibre may be united with the strand immediately before the rollers 21, 22.
Patent GB-750020-A (GB)
Title: Improvements in or relating to salt baths for the heat treatment of metals
IPC: C21D1/46
Filed: 1953-08-31
Abstract: A salt bath for the heat treatment of metals contains one or more metallic "salts" and 0,25-4 per cent by weight of magnesium boron fluoride.  The salts may include hydroxides, chlorides, carbonates and fluorides of the alkali metals or alkaline earth metals and chromium fluoride.
Patent GB-435888-A (GB)
Title: Automatic aero-dynamic stabiliser for aeroplanes
IPC: B64C1/00
Filed: 1934-08-21
Abstract: 435,888. Controlling aircraft automatically. BEMBERG, O. E., 28, Rue Emile Menier, Paris. Aug. 21, 1934, Nos. 24147 and 24148. Convention dates, Oct. 12, 1933 and July 4, 1934. Addition to 422,493. [Class 4] The single stabilizing device mounted in a ball or universal joint on a lever connected through links to the member controlling the lateral stability of the aeroplane, as described in the parent Specification, is replaced by two similar devices, one on each side of the longitudinal axis of the aeroplane, connected at the ball joints to bent levers such that for one direction of tilting the control is mainly effected by one of the devices, whilst the other device chiefly restores stability when the aeroplane is tilted in the other direction. When the plane is tilted so that the wind vane g<2> moves downwardly the arm carrying the vane tends to a vertical position and moves towards a position in which it would be perpendicular to its arm i<2> and exerts leverage at the pivot i<4>. At the same time the upward movement of the vane g<1> tends to bring its arm into alignment with the arm i<1>, thus exerting relatively little effect at the pivot i<3>. The rotation of the lever i2 rotates a lever j<4> secured to a shaft j<6> carrying an arm J<8> which through a link [2 moves the control arm M to restore the lateral stability of the aeroplane. In a modification each wind vane gl, g<2>, is replaced by a dihedral plane D carried by a bar d pivoted on a spherical or ball member c.
Patent GB-594352-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: H02P1/20
Filed: 1944-12-04
Abstract: 594,352. Control of motors. WEST & CO., Ltd., A., PAVITT, F. J., and MATTHEWS, H. H. Dec. 4, 1944, No. 24198. [Class 38 (iii)] The sequential operation of contactors in a motor control system is effected by a timing relay TR driven by a pilot motor PM and having two sets of contacts 1, 3, x and 2, 4, x which are alternately closed to energise a different contactor on each occasion. Each contactor C3-C5 has an auxiliary contact 28 to maintain its enorgisation independently of the relay and an auxiliary controlling contact 31 through which the energising circuit of the next contactor passes. The system has a master controller D.C. for the respective energising circuits of the contactors and the timing relay operates to delay the energisation of each contactor in turn; one relay is inoperative when the contactors are being deenergised. When the last contactor in a sequence has been energised the relay is braked automatically to stop in its starting position after a short period of slow running. The running speed of the pilot motor is variable and may be determined by the starting current of the controlled motor. Fig 2 shows the timing relay. A motor PM drives a disc 52 carrying one or more contact bridging rollers 55 arranged to engage alternatively each of two rows of fixed contacts; the number in row depends upon the number of contactors to be operated. An eddy current brake disc 61 co-operates with a stopping brake coil 62 and a brake coil 70 may be energised in shunt to resistance in the controlled motor circuit to relate the timing to the starting current. A cam or cams 60 operate a switch in circuit with the coil 62. The invention is applicable to the control of A.C. motors.
Patent GB-321256-A (GB)
Title: Improvements in or relating to magnetic compasses
IPC: G01C17/00
Filed: 1928-08-23
Abstract: 321,256. Chaffer, C., and Dand, J. H. Aug. 23, 1928. Magnetic compasses.-A compass of the drycard type is provided with means for periodically applying a brake to the magnet system at predetermined intervals of time. The card 5 and magnet system 6 are supported by a pivot 4 on a cup 3 carried by the stem 2 mounted on the bowl 1. Mounted beneath the bowl is a toothed wheel 7 rotated by clockwork &c. and engaging the end of a lever 8 which in turn engages a vertically-guided pin 10<a> carrying a disc 10. Resting on the disc are the inner ends of bellcranks 12, 15, 18, to the other ends of which are secured flexible wires &c. 14 arranged so as just to make contact with the card when the disc 10 is in its lowest position. The timing is arranged so that the brake is applied at intervals which are some odd multiple of one quarter of the time in which the magnet system makes a complete oscillation in azimuth. The brake may be applied to one or both surfaces of the card instead of to its periphery as shown.
Patent GB-648767-A (GB)
Title: Improvements in and relating to evaporating and concentrating apparatus
IPC: B01D1/12
Filed: 1947-09-03
Abstract: An evaporator comprises three steam-heated calandria sections interconnected in such a way that their tubes are traversed in series by the liquor under treatment, and means for controlling the heating of the three sections separately and independently of one another. The three sections may be embodied in a common shell or they may be separate.  The apparatus is suitable for sterilizing and con <PICT:0648767/III/1> <PICT:0648767/III/2> <PICT:0648767/III/3> centrating milk.  The shell 1 (Figs. 1 and 2), contains tubes 4 secured between end-plates 3 and arranged to form a preheater B, divided into six sections 8 to 13, and an evaporator A steam-heated by means of inlet 6 and condensate-outlet 6a.  The feed first flows through sections 13 to 9 of the preheater which are all heated by thermo-compressed vapour from the system supplied through inlet 7; the condensate being discharged through outlet 7a.  In the treatment of milk, section 8 is used as a sterilizer which is steam-heated to a temperature of 220 DEG  F. by means of inlet 7b and outlet 7c; the milk having been first preheated to 157 DEG  F. at a pressure of 40 lbs. per square inch in sections 13 to 9.  The sterilized milk passes from section 8 through valve 15 into evaporator A where flashing takes place; the vapour and milk being conveyed by tangential conduit 16 into separator 17 from the bottom of which concentrated milk is withdrawn.  Fig. 3 shows an apparatus for treating large quantities of milk wherein the preheater 20, sterilizer 21, and evaporator 28 are separate; the two latter sections being connected through a flash-chamber 23.  Valves 25 and 26 are provided so that part of the preheated milk may be returned, if desired, to the storage tank 18. In this embodiment, the evaporator 28 is heated by thermo-compressed vapour from the separator 30.  Specifications 384,741, 387,598 and 640,946 are referred to.